For there is not a just man upon earth, that doeth good, and sinneth not.
Not a just man upon earth ... - referring to Ecclesiastes 7:16. Be not self-righteous, "just" before God, because of thy self-imposed performances; because true "wisdom," or 'righteousness,' shows that there is not a just man, etc. Also connected with Ecclesiastes 7:19. Since there is none so just as to be free from sin, the "wisdom" from on high is needed to deliver us from sinning on either side (Ecclesiastes 7:16-17), and so incurring the destroying judgments of God.